Assay device



FIG. 1 is a perspective view of a first embodiment of an assay device, according to our design;

FIG. 2 is a top view of the assay device of FIG. 1;

FIG. 3 is a bottom view of the assay device of FIG. 1;

FIG. 4 is a front side view of the assay device of FIG. 1;

FIG. 5 is a right side view of the assay device of FIG. 1; and

FIG. 6 is a left side view of the assay device of FIG. 1;

FIG. 7 is a perspective view of the assay device of FIG. 1 with the cover removed; and,

FIG. 8 is a perspective view of a second embodiment of the assay device showing our new design. 

The ornamental design for an assay device, as shown and described. 